linux-kernel - Re: Issue with upgrade path from include/linux/version.h to uapi

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Date:	Fri, 19 Apr 2013 19:05:31 +0100
From:	David Howells <dhowells@...hat.com>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	dhowells@...hat.com, Arnd Bergmann <arnd@...db.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Dave Jones <davej@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Issue with upgrade path from include/linux/version.h to uapi

Mathieu Desnoyers <mathieu.desnoyers@...icios.com> wrote:

> This leads to very unfortunate consequences for any user relying on
> version.h to expose the kernel version accurately, since the old "stale"
> kernel version will be seen by the build.
> 
> Sadly, make clean does not even take care of removing this stale file.

I wonder if a simple approach would work - just add:

	$(shell rm include/linux/version.h)

to an appropriate header, perhaps the top-level Makefile.

Failing that, it might be worth adding it to the make-clean list.

David
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